Answer:
a15 = 50
t25 = 33554427
Explanation:
Insert/Substitute the number given in for n.
a15 = 3(15) + 5
a15 = 45 + 5
~
t25 = 2^25 - 5 2 times itself 25 times. 25 is the exponent in this equation
t25 = 33554432 - 5
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